Foldable playpen or similar article



FIG. 1 is a perspective view of a foldable playpen or similar article showing my new design;

FIG. 2 is a left side elevational view thereof, the side opposite being substantially a mirror image;

FIG. 3 is an end elevational view thereof, the end opposite being substantially a mirror image;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a foldable playpen or similar article, as shown and described. 